Antminer KS3 vs Bitmain Antminer T9 (12.5Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer KS3 | Specification | Bitmain Antminer T9 (12.5Th) |
|---|---|---|
| 9.4 TH/s | Hashrate | 12.5 TH/s |
| 3,500 W | Power Consumption | 1,576 W |
| 372.3 J/TH | Efficiency | 126.1 J/TH |
| 75 dB | Noise Level | — |
| 16.1 kg | Weight | 3,800.0 kg |
| 11,942 BTU/hr | BTU Output | 5,377 BTU/hr |
| 36/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| KHeavyHash | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer KS3
Bitmain Antminer T9 (12.5Th)
Based on BTC price of $79,143 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer T9 (12.5Th) wins on 4 of 6 factors (efficiency, hashrate, power consumption, price-performance). Its biggest concrete edge: 66% better efficiency (372 vs 126 J/TH). The Antminer KS3 holds the edge in home mining score and noise level. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Antminer KS3 and Bitmain Antminer T9 (12.5Th) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer T9 (12.5Th) 33% more hashrate (9.4 vs 12.5 TH/s)
- Bitmain Antminer T9 (12.5Th) 55% better power draw (3,500 vs 1,576 W)
- Bitmain Antminer T9 (12.5Th) 66% better efficiency (372 vs 126 J/TH)
- Antminer KS3 100% better weight (16.1 vs 3,800.0 kg)
- Antminer KS3 122% more heat output (11,942 vs 5,377 BTU/hr)
- Antminer KS3 29% more home mining score (36.0 vs 28.0)
Cost & ROI Over Time
A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.
| Antminer KS3 | Metric | Bitmain Antminer T9 (12.5Th) |
|---|---|---|
| $8,000 | Upfront cost (MSRP) | $1,100 |
| -$8.06 | Daily net profit | -$3.33 |
| -$10,941 | Net after 1 year | -$2,314 |
| -$13,882 | Net after 2 years | -$3,529 |
| -$16,823 | Net after 3 years | -$4,743 |
| Does not pay back at current rates (negative daily profit) | Payback period | Does not pay back at current rates (negative daily profit) |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Antminer KS3Score: 36/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer T9 (12.5Th)126.1 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer KS3 or Bitmain Antminer T9 (12.5Th) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer T9 (12.5Th) is more profitable at $-3.33/day compared to $-8.06/day for the Antminer KS3. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer KS3 vs Bitmain Antminer T9 (12.5Th): which runs at a lower noise level?
The Antminer KS3 is quieter at 75 dB compared to the Bitmain Antminer T9 (12.5Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Antminer KS3 vs Bitmain Antminer T9 (12.5Th): which fits a residential setup better?
The Antminer KS3 scores 36/100 on our Home Mining Score (vs 28/100 for the Bitmain Antminer T9 (12.5Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer KS3 vs Bitmain Antminer T9 (12.5Th): how much does the efficiency gap matter?
The Antminer KS3 runs at 372.3 J/TH while the Bitmain Antminer T9 (12.5Th) runs at 126.1 J/TH — a difference of 246.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 66% better efficiency (372 vs 126 J/TH).